Changes in Carrying Amount of Goodwill, by Reporting Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]
Goodwill gross	$ 1,569,004	$ 1,581,584
Accumulated impairment losses	(332,128)	(332,128)
Goodwill net	1,236,876	1,249,456
Purchase accounting adjustment	(269)
Translation adjustment	(12,311)
Americas Segment
Goodwill [Line Items]
Goodwill gross	1,088,188	1,086,707
Accumulated impairment losses	(332,128)	(332,128)
Goodwill net	756,060	754,579
Purchase accounting adjustment	(269)
Translation adjustment	1,750
EMEA Segment
Goodwill [Line Items]
Goodwill gross	343,081	353,282
Goodwill net	343,081	353,282
Translation adjustment	(10,201)
Asia
Goodwill [Line Items]
Goodwill gross	137,735	141,595
Goodwill net	137,735	141,595
Translation adjustment	$ (3,860)

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 45

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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